Hardware User Guide

12Gb/s Intel® RAID Controllers User Guide 22

SAS Device Cables and Connectors

This section describes the cables and the connectors used on the 12Gb/s Intel

RAID

Controllers and provides step-by-step instructions for connecting SAS drives, SATA

drives, or both to the 12Gb/s Intel

RAID Controller. The SAS protocol and the SATA

protocol use a thin, 7-wire connector instead of the 68-wire SCSI cable or the 40-wire

ATA cable.

Note: Use only straight SAS cables, not crossover SAS cables.

The following figure shows the SAS cable that connects the internal connectors on a SAS

RAID controller to SAS drives, SATA drives, or both.

Figure 6. Internal SAS Cable for Connection to SAS Drives, SATA II Drives, or

SATA III Drives

The following figure shows the SATA III device plug connector that connects a SAS

RAID controller with internal connectors to the host receptacle connector on a backplane.

A SATA III connector consists of a signal connector and a power connector.

Figure 7. SATA III Connectors

Flash ROM/

SAS

PCI Express

RAID Controller

SAS/SATA III Device

32-Bit Memory

Address/Data

Bus

PSBRAM/

SAS/SATA III Device

PCI Express Interface

NVSRAM

Interface

Device Plug

Connector

Host Receptacle

Connector

Serial ATA

Signal Connector

(pin 1)

Serial ATA

Power Connector

(pin 1)